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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 40 (1 to 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 4); 44 (, 1 to 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1 to 4); 60 (, 1 to 4); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1 to 4); 65 (, 1 to 4); 66 (, 1 to 4); 67 (, 1 to 4); 68 (, 1); 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Internet Archive
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Preserved
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2025-08-08
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1 to 49
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 68
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Portico
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Preserved
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2026-02-12
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Preserved : 1965: 1(1-4), 1966: 2(1-4), 1967: 3(1-4), 1968: 4(1-4), 1969: 5(1-4), 1970/1973: 6(1-4), 1971: 7(1-4), 1972: 8(1-4), 1973: 9(1-4), 1974: 10(1-4), 1975: 11(1-4), 1976: 12(1-4), 1977: 13(1-4), 1978: 14(1-4), 1979: 15(1-4), 1980: 16(1-4), 1981/1982: 17(1-4), 1982: 18(1-4), 1983: 19(1-4), 1984: 20(1-3), 1984: 21(1-3), 1985: 22(1-3), 1985: 23(1-3), 1986: 24(1-3), 1986: 25(1-3), 1987: 26(1-3), 1987: 27(1-3), 1988: 28(1-3), 1988: 29(1-3), 1989: 30(1-3), 1989: 31(1-3), 1990: 32(1-3), 1990: 33(1-3), 1991: 34(1-3), 1991: 35(1-3), 1993: 36(1-4), 1994: 37(1-4), 1995: 38(1-4), 1996: 39(1-4), 1997: 40(1-4), 1998: 41(1-4), 1999: 42(3)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2006: 49(3), 2007: 50(3)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2008: 51(3), 2009: 52(1, 3)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2010: 53(4)
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LOCKSS Archive
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In Progress
|
2026-02-09
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55, 62
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Portico
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Preserved
|
2026-02-12
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Preserved : 2012: 55(3-4), 2013: 56(1-4), 2014: 57(1-4), 2015: 58(1-4), 2016: 59(1-4), 2017: 60(1-4), 2018: 61(1-4), 2019: 62(1-4), 2020: 63(1-4), 2021: 64(1-4), 2022: 65(1-4), 2023: 66(1-4), 2024: 67(1-4), 2025: 68(1-3)
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LOCKSS Archive
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Preserved
|
2026-02-09
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56 to 61
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 29 (3); 40 (2-4); 41 (1-3); 43 (4); 44 (1-4); 45 (1-4); 46 (1-4); 47 (1-4); 48 (1-4); 49 (1, 2, 4); 50 (1-4); 51 (1-4); 52 (1-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1-4); 62 (1-3)
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|
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Library of Congress
|
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Preserved
|
2025-04-07
|
|
|
60 (4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 3)
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National Digital Preservation Program, China
|
|
Preserved
|
2025-10-23
|
|
|
Preserved : 4 (1 to 4); 5 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4)
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|
|
National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 4 (1 to 4); 5 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4)
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|
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National Digital Preservation Program, China
|
|
Preserved
|
2025-10-23
|
|
|
Preserved : 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 3); 67 (1 to 4)
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|
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National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 3); 67 (1 to 4)
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